{"version":3,"file":"mem-2d0ed7bd.js","sources":["../../node_modules/mem/dist/index.js"],"sourcesContent":["'use strict';\nconst mimicFn = require(\"mimic-fn\");\nconst mapAgeCleaner = require(\"map-age-cleaner\");\nconst decoratorInstanceMap = new WeakMap();\nconst cacheStore = new WeakMap();\n/**\n[Memoize](https://en.wikipedia.org/wiki/Memoization) functions - An optimization used to speed up consecutive function calls by caching the result of calls with identical input.\n\n@param fn - Function to be memoized.\n\n@example\n```\nimport mem = require('mem');\n\nlet i = 0;\nconst counter = () => ++i;\nconst memoized = mem(counter);\n\nmemoized('foo');\n//=> 1\n\n// Cached as it's the same arguments\nmemoized('foo');\n//=> 1\n\n// Not cached anymore as the arguments changed\nmemoized('bar');\n//=> 2\n\nmemoized('bar');\n//=> 2\n```\n*/\nconst mem = (fn, { cacheKey, cache = new Map(), maxAge } = {}) => {\n    if (typeof maxAge === 'number') {\n        // TODO: Drop after https://github.com/SamVerschueren/map-age-cleaner/issues/5\n        // @ts-expect-error\n        mapAgeCleaner(cache);\n    }\n    const memoized = function (...arguments_) {\n        const key = cacheKey ? cacheKey(arguments_) : arguments_[0];\n        const cacheItem = cache.get(key);\n        if (cacheItem) {\n            return cacheItem.data;\n        }\n        const result = fn.apply(this, arguments_);\n        cache.set(key, {\n            data: result,\n            maxAge: maxAge ? Date.now() + maxAge : Number.POSITIVE_INFINITY\n        });\n        return result;\n    };\n    mimicFn(memoized, fn, {\n        ignoreNonConfigurable: true\n    });\n    cacheStore.set(memoized, cache);\n    return memoized;\n};\n/**\n@returns A [decorator](https://github.com/tc39/proposal-decorators) to memoize class methods or static class methods.\n\n@example\n```\nimport mem = require('mem');\n\nclass Example {\n    index = 0\n\n    @mem.decorator()\n    counter() {\n        return ++this.index;\n    }\n}\n\nclass ExampleWithOptions {\n    index = 0\n\n    @mem.decorator({maxAge: 1000})\n    counter() {\n        return ++this.index;\n    }\n}\n```\n*/\nmem.decorator = (options = {}) => (target, propertyKey, descriptor) => {\n    const input = target[propertyKey];\n    if (typeof input !== 'function') {\n        throw new TypeError('The decorated value must be a function');\n    }\n    delete descriptor.value;\n    delete descriptor.writable;\n    descriptor.get = function () {\n        if (!decoratorInstanceMap.has(this)) {\n            const value = mem(input, options);\n            decoratorInstanceMap.set(this, value);\n            return value;\n        }\n        return decoratorInstanceMap.get(this);\n    };\n};\n/**\nClear all cached data of a memoized function.\n\n@param fn - Memoized function.\n*/\nmem.clear = (fn) => {\n    const cache = cacheStore.get(fn);\n    if (!cache) {\n        throw new TypeError('Can\\'t clear a function that was not memoized!');\n    }\n    if (typeof cache.clear !== 'function') {\n        throw new TypeError('The cache Map can\\'t be cleared!');\n    }\n    cache.clear();\n};\nmodule.exports = mem;\n"],"names":["mimicFn","require$$0","mapAgeCleaner","require$$1","decoratorInstanceMap","cacheStore","mem","fn","cacheKey","cache","maxAge","memoized","arguments_","key","cacheItem","result","options","target","propertyKey","descriptor","input","value","dist"],"mappings":"iIACA,MAAMA,EAAUC,EACVC,EAAgBC,EAChBC,EAAuB,IAAI,QAC3BC,EAAa,IAAI,QA6BjBC,EAAM,CAACC,EAAI,CAAE,SAAAC,EAAU,MAAAC,EAAQ,IAAI,IAAO,OAAAC,CAAQ,EAAG,KAAO,CAC1D,OAAOA,GAAW,UAGlBR,EAAcO,CAAK,EAEvB,MAAME,EAAW,YAAaC,EAAY,CACtC,MAAMC,EAAML,EAAWA,EAASI,CAAU,EAAIA,EAAW,CAAC,EACpDE,EAAYL,EAAM,IAAII,CAAG,EAC/B,GAAIC,EACA,OAAOA,EAAU,KAErB,MAAMC,EAASR,EAAG,MAAM,KAAMK,CAAU,EACxC,OAAAH,EAAM,IAAII,EAAK,CACX,KAAME,EACN,OAAQL,EAAS,KAAK,IAAG,EAAKA,EAAS,OAAO,iBAC1D,CAAS,EACMK,CACf,EACI,OAAAf,EAAQW,EAAUJ,EAAI,CAClB,sBAAuB,EAC/B,CAAK,EACDF,EAAW,IAAIM,EAAUF,CAAK,EACvBE,CACX,EA2BAL,EAAI,UAAY,CAACU,EAAU,CAAA,IAAO,CAACC,EAAQC,EAAaC,IAAe,CACnE,MAAMC,EAAQH,EAAOC,CAAW,EAChC,GAAI,OAAOE,GAAU,WACjB,MAAM,IAAI,UAAU,wCAAwC,EAEhE,OAAOD,EAAW,MAClB,OAAOA,EAAW,SAClBA,EAAW,IAAM,UAAY,CACzB,GAAI,CAACf,EAAqB,IAAI,IAAI,EAAG,CACjC,MAAMiB,EAAQf,EAAIc,EAAOJ,CAAO,EAChC,OAAAZ,EAAqB,IAAI,KAAMiB,CAAK,EAC7BA,CACV,CACD,OAAOjB,EAAqB,IAAI,IAAI,CAC5C,CACA,EAMAE,EAAI,MAASC,GAAO,CAChB,MAAME,EAAQJ,EAAW,IAAIE,CAAE,EAC/B,GAAI,CAACE,EACD,MAAM,IAAI,UAAU,+CAAgD,EAExE,GAAI,OAAOA,EAAM,OAAU,WACvB,MAAM,IAAI,UAAU,iCAAkC,EAE1DA,EAAM,MAAK,CACf,EACA,IAAAa,EAAiBhB","x_google_ignoreList":[0]}